Yellow represents justice! The common phrase used for this is "Shoot". This is because, in the game, you are turned yellow during the Mettaton fight and have to shoot him with bullets to damage him. Overall, you are a person who sticks up for themselves, their friends, and their family. You also are willing to hurt someone if they get in your way.

You are a good fit for Asriel! Act as though you're the same age, okay? You are sweet and generous, and a bit emotional. You are open about your feelings, and all you really want is someone to be there for you. Also, you are childish (In a good way) and free-spirited.